Road surfacing equipment



June 28, 1932.

G. E. PEARSON ET AL ROAD SURFAQ ING EQUI PMENT Filed Oct. 4, 1930 V' 4 sheets-sheet 1 June 28, 1932- G. E. PEARSON ET Al.

ROAD SURFACING EQUIPMENT Filed Oct. 4, 1950 4 Sheets-Sheet 2 O00OOOOOOQOOOOOOOOOOIOO8- mvg QN; QQ www June 2.8, 1932- G. E. PEARSON ET AL 1,854,612

ROAD SURFAG I NG EQUI PMENT F11-ed oct. 4, 1930 4 sheets-sheet 3 June 28, 1932.

G. E. PEARSON ET AL ROAD SURFACING EQUIPMENT 4 Sheets-Sheet 4 Filed Oct. 4, 1950 Patented June 28, 1932 Y' muro` STATES PATENT .OFFICE- GEORGE E. IPEARSON AND HARRY, PETRILLI, OF BOSTON, MASSACHUSETTS Roan sUnFAcING EQUIPMENT Application led October 4, 1930..v Serial No. 486,497.

Our present invention relates to road sur- 2 2 of Fig. 1 showing the drive from the facing equipment, and more particularly to automobile transmission shaft to the flexible a motor truck equipment which will handle drive shaft which operates the blower at the sand, gravel, and fluids such as oils, coal tar rear of the truck chassis;

5 mixtures, etc. Fig. 3 is a contracted plan cross-section 55 Practically all equipment in use today is taken on the line 8 3 of Fig. 1 showing the designed to deliver from the rear of the truck drive assembly and the delivery nozzle atchassis and because of such design are to a tached to the front aXle of the truck chassis; great extent restricted in their use. Y Fig. 4 is a partial cross-section of the 10 In our present invention we have developed blower drive taken on line 4l-4 of Fig. 3, 60 a mechanism which will not only deliver particularly showing the clutch mechanism from the front of the truck but which will indicated in plan view in Fig. 3;

handle a large variety of materials. Fig. 5 is a rear elevation of the truck body Atruck of this character may, for instance, and chassis showing the arrangement of the be loaded with line screened sand and be used blower and the conduit from the truck body 05 to sand streets in the winter time. With the to the hopper associated lwith the blower; old type of sander much difficulty is encoun- Fig. 6 is a cross-section taken on the line 'tered when used for this purpose because of 6- .6 of Fig. 5 greatly enlarged in scale and poor traction of the truck itself and where broken away for the purpose of showing the slippery grades are present it is necessary to discharge end of the truck body; the hopper 70 i reverse the truck and back it up or down the to' which the blower is'attached, and the disgrade in order yto get theV advantage of the charge nozzle attached to the front axle of the sand deposited from its rear. It will be aptruck chassis; and

parent in our device that this difficulty isre- Fig. .7 shows a transverse cross-section moved as the truck sands its own traction surtaken through the spray nozzle. 75 'face on the road as it progresses. This fea- Referring more in detail to the drawings,

ture also applies to the sanding of roads after 10 indicates a truck chassis generally upon coal tar mixtures have been sprayed over the which is mounted a body 11 which is adapted road prior to sanding. t to pivot at its rear end Vand be elevated at its,

Our arrangement will handle eihciently all front end, as shown in Fig. 1, by standardS0 grades of sand chips upto quite heavy gravel. mechanism, a portion of which is indicated The principal object, therefore, is 'an imat 12.

proved road surfacing machine: The elevation of the body 11 is, of course,

Another object is a road surfacing machine for the purpose of sliding the contents to-Av i adapted to distribute sand, gravel, and fluids ward the lower rearv end by gravity, this being 85 from the front of the machine: common practice in delivery trucks of this Still another object is a machine of the type. above (pualicationsl provided with an auxil- Attached to the rear of the chassis frame iary `drive adapted to operate the blower di- 13 by means of clamp bolts '14, is a bracket.A rectly from the transmission mechanism of 15 ladapted to support a blower 16 and a 90 the machine: receiving and discharging hopper.

Other features comprising the construction This receiving and discharging hopper and operation of the machine will appear as comprises two main parts, a hopper member 'the description of the same progresses. -17 and a chamber 18. The hopper 17 con-f.` Referring to the drawings comprising a nects with another hopper 19 attached to theA part of this specification and application: 'body 11 of the truck by means of bolts 20 Fig. 1 shows a sid-e elevation of an 'autopassing through the opening 21 of the body, mobile truck the body of which is V elevated at and is provided with a screen 22 located across one end in position to discharge; the opening 21 to prevent large stones or Fig. 2 is a cross-section taken on the line voids of too great a size to pass through the '100 and out through the spray nozzle 27 on to the road surface.

The conduit 26 may be supported alongl the-v chassis frame 13 at intervals, as indicated at 28 until it connects with'the nozzle 27. The nozzle 27 may be secured to abracket 29 as indicated at 30, the bracket 29 being attached to and supported on the front axle 31 by means of bolts 32 and 33, better shown in Fig. 6.

Figs. 2, 3, 4 and 5 particularly show the drive mechanism for the blower, comprising aV sprocket 34 permanently attached to a counter shaft located on the transmission of the truck. p

On the left-hand side of the truck chassis frame 13 is located a bracket 35 being held thereto by means of bolts 36 and having inwardly extending bearinghousings 37. stubshaft 38` is journalled at 39 Vwithin the bearing housings 37 the front endA of which is provided with a slidable clutch member 40. The member 40 is providedv with toggle member 41 which when separated,as.showninFig. 4, causes the band members 42 to expand in diameter. Surrounding the bands 42 is a housing 43 having a hub 44 journalled on the stub-shaft 38 and keyed at 45 to a sprocket 46'. rlhe sprocket 46l is directly connected to the sprocket 34 by means of the chain 47.

When the clutch is engaging as shownY in Fig. 4, the transmission shaft 48 revolves', the stub-shaft 38 revolves with it. Connecting with the stub-shaft 38 is a flexible shaft coupling 49 being .held thereto by means ofY a set screw 50. The coupling 49y attaches to the exible drive shaft 51 connecting with the blower shaft 52 by means of another'coupling 53. Surrounding the clutch member 40 and securely attached theretois an annular band 54 having a centrally located internal track 55 adapt-ed to receive rollers 56 located on the spanner member 57. The spanner member 57 is pivoted at 58 in an offset member comprising a part of the casting 35, the free end of said spanner being engaged by a bell-crank lever 59 pivoted at 60 on the chas sis,` frame 13. Another set of levers 61 are pivoted at 62 at the side of the seat, as shown in Fig. 1, such that the driver may by pulling up or down on the lever 61 cause the clutch member 40 to slide forward or back on the stub-shaft 38 thereby causing the toggle members 41 to spread the bands 42 and frictionally engage. the inner surface of the member 43 turning the clutch member 40 which is keyed to the stub-shaft 38.

Normally the sprocket 46 and housing 43 rotate about the stub-shaft 38 freely.

Fig. 7 illustrates a typical cross-section through the spray nozzle, the unit comprising a base and front piece 71. The front piece 71 is provided with a series of openings 72 which may be formed in one casting or by inserting the ribs 73 separately, as may be desired.

Having thus described our invention what we claim as new, is:

1. An improved road surfacing machine comprisingV in combination, an automobile chassis, a drive mechanism located between theV transmission of said chassis and a blower, said blower adapted to deliver air pressure toa chamber attached to said chassis, a hopper adapted to feed road surfacing material into said chamber, a second hopper attached to a body located on said chassis adapted to feed said first hopper, a spray nozzle located at the front of said chassis adapted to connect with said chamber and distribute road surfacing material therefrom, substantially as shown and described.

2. An improved road surfacing machine comprising in combination with an automolbile truck chassis, motor and dump body, a

receptacle located at the rear of said' chassis adapted to receive .road surfacing material from said body, a blower adapted to supply air pressure to said receptacle, a discharge nozzle located on the front of said chassis and connected with said receptacle, driving means connected to the motor of said automobile truck chassis adapted to drive said blower.

3. An improved road surfacing machine comprising in combination with an automobile truck chassis, motor and dump body, a receptacle located on the rear of said body adapted to receive screened material therefrom, a blower adapted to supply air pressure to said receptacle, a discharge nozzle located on the front of said chassis and connected with said receptacle, driving means connected to the motor of said automobile truck chassis adapted to drive said blower.

4. An improved road surfacing machine comp-rising in combination with an automobile truck chassis, motor, and body, a re ceptacle located on the rear of said body adapted to receive screened material therefrom` a blower located adjacent said receptacle and connected thereto and adapted to supply air under pressure to the interior of said receptacle, a discharge nozzle located on the front of said chassis and connected with said receptacle, driving means connected to the motor of said automobile truck chassis adapted to drive said blower.

5. An improved road surfacing machine comprising in combination with an automobile truck chassis, motor, and bod a receptacle located on the rear of sald body adapted to receive screened material therefrom, a blower located adjacent said receptacle and connected thereto and adapted to supply air under pressure to the interior of said receptacle, a discharge nozzle located on the front of said chassis and connecting with the interior of said receptacle, said discharge nozzle provided with a plurality of discharge ports radially disposed to each other, driving means connected to the said motor of said automobile truck chassis adapted to drive said blower.

6. An improved road surfacing machine comprising in combination with an automobile truck chassis, motor, and body, a receptacle located on the rear of said body adapted to receive screened material therefrom, a

blower located adjacent said receptacle and connected thereto and adapted to supply air under pressure to the interior of said receptacle, a discharge nozzle located on the front of said chassis and connecting with the interior of said receptacle, said discharge nozzle provided with a plurality of discharge ports radially disposed to each other, driving means connected to the said motor of said automobile truck chassis adapted to intermittently drive said blower.

In testimony whereof we have aiiixed our signatures.

GEORGE E. PEARSON. HARRY E. PETRILLI. 85 

